Lack of heart and laziness are personal characteristics. Sometimes they can be changed (sometimes) by a strong leader or coach. But the person to be changed has to have respect for that leader/coach/mentor and strive to do better for that person. From what 90% of what you guys have said, Sidney has walked all over Stansbury from day one. How could he respect him enough to want to change?
My original point was, those generally are character issues that have been embedded for a long time, and very few, if any, coaches can change character flaws like those in two years. Blame Stansbury for Sidney still being fat, but if he had no heart before he got to State, chances are, Lombardi couldn't change that. He'd just get rid of him.
ETA: Way to totally change the reason for my response.